where to look for cases

roofingboom · 31st May 2004, 09:09 AM

so i have been working on some amps and i am having a hard time finding cases for amps
i was wondering what places you guys use to get like a plain case for an home or car amps
i would like all ideas posted so that i can take a look at where to get cases
thanks alot
nathan

roofingboom · 31st May 2004, 09:14 AM

oh yea forgot to ask this but what the hell does everyone use to isolate transistors from heatsinks so they dont short out
i know what i need but dont know where to get it
is there like some cheap household alternatives or what do people mainly use out in the home audo do it you selfers

traderbam · 31st May 2004, 10:19 AM

You can get most stuff from here: farnell
I've never heard of anyone using anything homebrew for transistor isolation. Mica washers with silicon grease or thermally conductive rubber washers are pretty cheap.
Avoid cling-film (saranwrap?) as it is unreliable, as it is in certain other applications

roofingboom · 31st May 2004, 10:54 AM

i went to farnell.com and you cant see any products what up with that?
also where do you get these washers and grease at a reasonable price

classd4sure · 31st May 2004, 11:14 AM

Hi,

Have you tried the usual ones like say...digikey....mouser....etc?

traderbam · 31st May 2004, 11:35 AM

Sorry - try:

washers

This shows what you need to buy. You need to contact farnell US to get them if you are in the US. But I suspect any electronics components dealer will have them.

jaycee · 31st May 2004, 04:57 PM

Any component dealer in the US dealing in power transistors will have at least Mica washers. I prefer Sil-Pads for flatpack transistors which I get out of old PC PSU's, as they require no thermal grease or mess.

You can get really good things out of old PC PSU's, such as line filter chokes, heatsinks, diode bridges, small signal transistors, resistors, capacitors, MOVs, the works

They are definately worth keeping if they blow up.

31st May 2004, 09:09 AM	#1
roofingboom diyAudio Member Join Date: May 2004 Location: minnesota	where to look for cases so i have been working on some amps and i am having a hard time finding cases for amps i was wondering what places you guys use to get like a plain case for an home or car amps i would like all ideas posted so that i can take a look at where to get cases thanks alot nathan

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31st May 2004, 09:14 AM	#2
roofingboom diyAudio Member Join Date: May 2004 Location: minnesota	oh yea forgot to ask this but what the hell does everyone use to isolate transistors from heatsinks so they dont short out i know what i need but dont know where to get it is there like some cheap household alternatives or what do people mainly use out in the home audo do it you selfers

31st May 2004, 10:19 AM	#3
traderbam diyAudio Member Join Date: Jan 2002 Location: Earth	You can get most stuff from here: farnell I've never heard of anyone using anything homebrew for transistor isolation. Mica washers with silicon grease or thermally conductive rubber washers are pretty cheap. Avoid cling-film (saranwrap?) as it is unreliable, as it is in certain other applications

31st May 2004, 10:54 AM	#4
roofingboom diyAudio Member Join Date: May 2004 Location: minnesota	i went to farnell.com and you cant see any products what up with that? also where do you get these washers and grease at a reasonable price

31st May 2004, 11:14 AM	#5
classd4sure Account Disabled Join Date: Feb 2004	Hi, Have you tried the usual ones like say...digikey....mouser....etc?

31st May 2004, 11:35 AM	#6
traderbam diyAudio Member Join Date: Jan 2002 Location: Earth	Sorry - try: washers This shows what you need to buy. You need to contact farnell US to get them if you are in the US. But I suspect any electronics components dealer will have them.

31st May 2004, 04:57 PM	#7
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Any component dealer in the US dealing in power transistors will have at least Mica washers. I prefer Sil-Pads for flatpack transistors which I get out of old PC PSU's, as they require no thermal grease or mess. You can get really good things out of old PC PSU's, such as line filter chokes, heatsinks, diode bridges, small signal transistors, resistors, capacitors, MOVs, the works They are definately worth keeping if they blow up.

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